UC-NRLF 


^B    7b    TQ5 


GIFT  or 


1917 


Circular 

for  the  information  of 

Persons  Desiring  to  Enter  the 

Navy  as  Acting  Ensigns 

for  Engineering  Duty 


1918 


WASHINGTON 

GOVERNMENT  PRINTING  OFFICE 

1917 


hftp://w\AAAitarch 


Circular 

for  the  information  of 

Persons  Desiring  to  Enter  the 

Navy  as  Acting  Ensigns 

for  Engineering  Duty 


1918 


WASHINGTON 

GOVERNMENT  PRINTING  OFFICE 

1917 


Af 


y 


■^ 


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Note* — Next  examination  will  be  held  January  2,  3,  4, 

and  5,  1918 


CIRCULAR  FOR  THE  INFORMATION  OF  PERSONS  DESIRING  TO  ENTER 
THE  NAVY  AS  ACTING  ENSIGNS  FOR  ENGINEERING  DUTY. 


An  act  of  Congress  approved  August  2d,  1916,  authorizes  the  permanent  appoint- 
ment of  33  acting  ensigns  annually,  as  follows: 

"That  the  Secretary  of  the  Navy  is  hereby  authorized  to  appoint  annually  in  the 
line  of  the  Navy  for  a  period  of  ten  years  following  the  passage  of  this  act,  in  the  order 
of  merit  determined  by  such  compat^tive  examination  as  he  may  prescribe,  thirty 
acting  ensigns  for  the  performance  of  engineering  duties  only.  Persons  so  appointed 
must  have  received  a  degree  of  mechanical  or  electrical  engineer  from  a  college  or 
university  of  high  standing  or  be  graduates  of  technical  schools  approved  by  the  Sec- 
retary of  the  Navy,  raust  have  been  found  physically  qualified  by  a  board  of  medical 
oflicers  of  the  Navy  for  the  performance  of  the  duties  required,  and  must  at  the  time 
of  appointment  be  not  less  than  twenty  nor  more  than  twenty-six  years  of  age.  Such 
appointments  shall  be  for  a  probationary  period  of  three  years,  and  may  be  revoked 
at  any  time  by  the  Secretary  of  the  Navy. 

"Such  acting  ensigns  shall,  upon  the  completion  of  the  probationary  period  of  three 
years,  of  which  two  years  shall  have  been  spent  on  board  cruising  vessels  and  one  year 
pursuing  a  course  of  instruction  at  the  Naval  Academy  prescribed  by  the  Secretary 
of  the  Navy,  be  commissioned  in  the  grade  of  lieutenant  of  the  junior  grade  after  sat- 
isfactorily passing  such  examination  as  may  be  prescribed  by  the  Secretary  of  the 
Navy,  and  having  been  recommended  for  promotion  by  the  examining  board  and 
found  physically  qualified  by  a  board  of  medical  officers  of  the  Navy, 

"Such  officers  shall  thereafter  be  required  to  perform  engineering  duties  only,  and 
shall  be  eligible  for  advancement  to  the  higher  grades  in  the  manner  herein  provided 
for  line  officers  assigned  to  engineering  duty  only." 

APPOINTMENT. 

A  candidate  for  appointment  as  acting  ensign  for  engineering  duty  must  have  re- 
ceived a  degree  of  mechanical  or  electrical  engineer  from  one  of  the  following  schools 
and  must,  at  the  time  of  appointment,  be  a  citizen  of  the  United  States,  not  less  than 
23  nor  more  than  26  years  of  age,  a  candidate  who  has  passed  his  twenty-sixth  birth- 
day not  being  eligible.  Attention  is  particularly  invited  to  the  italicized  portion  of 
the  preceding  sentence.  Although  a  candidate  may  successfully  pass  the  professional 
and  physical  examination  his  appointment  can  not  be  made  imless  he  is  within  the 
prescribed  age  limit  at  the  time  he  accepts  an  appointment  that  may  be  tendered  by 
the  department  after  passing  all  examinations.  The  age  limit  is  prescribed  by  law 
and  the  Navy  Department  has  no  discretion  in  the  matter  of  waiving  same. 

Therefore,  no  person  will  be  permitted  to  appear  who  will  pass  his  twenty-sixth 
birthday  within  two  months  after  the  date  set  for  the  examination.  This  is  done  in 
order  to  prevent  candidates  from  going  to  the  trouble  and  expense  of  appearing  for 
examination  when  it  is  certain  that  they  can  not  be  examined,  have  their  papers 
marked  by  the  local  board  in  Washington,  and  their  appointments  issued  and  accepted 
before  reaching  the  statutory  age  limit  of  26. 
20834'*— 17  (3) 


3  '■'  O 


SCHOOLS  WHOSE  GRADUATES  IN  ELECTRICAL  OR  MECHANICAL  ENGINEERING  ARE 
ELIGIBLE  TO  APPEAR  FOR  EXAMINATION  FOR  APPOINTMENT  AS  ACTING  ENSIGN  FOR 
ENGINEERING   DUTY. 

Agricultural  and  Mechanical  College  of  Texas,  College  Station,  Tex. 

Alabama  Polytechnic  Institute,  Auburn,  Ala. 

Armour  Institute  of  Technology,  Chicago,  111. 

Brown  University,  Providence,  R.  I. 

Carnegie  Institute  of  Technology,  Pittsburgh,  Pa. 

Case  School  of  Applied  Science,  Cleveland,  Ohio. 

Catholic  University,  Washington,  D.  C. 

Clarkson  College  of  Technology,  Potsdam,  N.  Y. 

Clemson  Agricultural  College,  Clemson  College,  S.  0. 

College  of  the  City  of  New  York,  New  York  City,  N.  Y. 

Colorado  Agricultural  College,  Fort  Collins,  Colo. 

Colorado  School  of  Mines,  Golden,  Colo. 

Columbia  University,  New  York  City,  N.  Y 

Cornell  University,  Ithaca,  N.  Y. 

Darthmouth  College,  Hanover,  N.  H. 

Delaware  College,  Newark,  Del. 

Drexel  Institute,  Philadelphia,  Pa. 

George  Washington  University,  Washington,  D.  C. 

Georgia  School  of  Technology,  Atlanta,  Ga. 

Iowa  State  College  of  Agriculture  and  Mechanic  Arts,  Ames,  Iowa. 

Johns  Hopkins  University,  Baltimore,  Md. 

Kansas  State  Agricultural  College,  Ma^ijhattan,  ICans. 

Lafayette  College,  Easton,  Pa. 

Lehigh  University,  South  Bethlehem,  Pa. 

Leland  Stanford  Jr  University,  Stanford  University,  Cal. 

Louisiana  State  University  and  Agricultural  and  Mechanical  College,  Baton  Rouge, La. 

Maryland  State  College  of  Agriculture,  College  Park,  Md. 

Massachusetts  Institute  of  Technology  Cambridge,  Mass. 

Michigan  Agricultural  College,  East  Lansing,  Mich. 

Michigan  College  of  Mines,  Houghton,  Mich. 

Mississippi  Agricultural  and  Mechanical  College,  Agricultural  College,  Miss. 

Missouri  State  School  of  Mines,  RoUa,  Mo. 

Montana  State  College  of  Agriculture  and  Mechanic  Arts,  Bozeman,  Mont. 

Montana  State  School  of  Mines,  Butte,  Mont. 

Municipal  University  of  Akron,  Akron,  Ohio. 

New  Hampshire  College  of  Agriculture  and  Mechanic  Arts,  Durham,  N.  H. 

New  Mexico  College  of  Agriculture  and  Mechanic  Arts,  State  College,  N.  Mex. 

New  Mexico  School  of  Mines,  Socorro,  N.  Mex. 

New  York  Ujiiversity,  New  York  City,  N.  Y. 

North  Carolina  College  of  Agriculture  and  Mechanic  Arts,  West  Raleigh,  N.  C. 

North  Dakota  Agricultural  College,  Agricultural  College,  N.  Dak. 

Northwestern  University,  Evanston,  111. 

Norwich  University,  Northfield,  Vt. 

Ohio  Northern  University,  Ada,  Ohio. 

Ohio  State  University,  Columbus,  Ohio. 

Oklahoma  Agricultural  and  Mechanical  College,  Stillwater,  Okla. 

Oklahoma  School  of  Mines  and  Metallurgy,  Wilburton,  Okla. 

Oregon  Agricultural  College,  Corvallis,  Oreg. 

Pennsylvania  College,  Gettysburg,  Pa. 

Pennsylvania  Military  College,  Chester,  Pa. 


Pennsylvania  State  College,  State  College,  Pa. 

Polytechnic  Institute  of  Brooklyn,  Brooklyn,  N.  Y. 

Princeton  University,  Princeton,  N.  J. 

Purdue  University,  Lafayette,  Ind. 

Rensselaer  Polytechnic  Institute,  Troy,  N.  Y. 

Rhode  Island  State  College,  Kingston,  R.  I. 

Rice  Institute,  Houston,  Tex. 

Rose  Polytechinc  Institute,  Terre  Haute,  Ind. 

Rutgers  College,  New  Brunswick,  N.  J. 

South  Carolina  Military  Academy  (The  Citadel),  Charleston,  S.  C. 

St.  John's  College,  Annapolis,  Md. 

State  College  of  Washington,  Pullman,  Wash. 

State  University  of  Iowa,  Iowa  City,  Iowa. 

Stevens  Institute  of  Technology,  Hoboken,  N.  J. 

Syracuse  University,  Syracuse,  N.  Y. 

Throop  College  of  Technology,  Pasedena,  Cal. 

Tufts  College,  Tufts  College,  Mass. 

Tulane  University  of  Louisiana,  New  Orleans,  La. 

Union  College,  Schenectady,  N.  Y 


University  o 
University  o 
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University  o 
University  o: 
University  o 
University  o 
University  o 
University  o; 
University  ol 
University  o 
University  o 
University  o 
University  o; 
University  o; 
University  o: 
University  o: 
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Alabama,  University,  Ala. 
Arizona,  Tucson,  Ariz. 
Arkansas,  Fayetteville,  Ark. 
California,  Berkeley,  Cal. 
Colorado,  Boulder,  Colo. 
Cincinnati,  Cincinnati,  Ohio. 
Florida,  Gainesville,  Fla. 
Idaho,  Moscow,  Idaho. 
Illinois,  Urbana,  111. 
Kansas,  Lawrence,  Kans. 
Kentucky,  Lexington,  Ky. 
Maine,  Orono,  Me. 
Michigan,  Ann  Arbor,  Mich. 
Minnesota,  Minneapolis,  Minn. 
Mississippi,  University,  Miss. 
Missouri,  Columbia,  Mo. 
Nebraska,  Lincoln,  Nebr. 
Nevada,  Reno,  Nev. 
North  Carolina,  Chapel  Hill,  N.  C. 
North  Dakota,  University,  N.  Dak. 
Notre  Dame,  Nqtre  Dame,  Ind. 
Oklahoma,  Norman,  Okla. 
Pennsylvania,  Philadelphia,  Pa. 
Pittsburgh,  Pittsburgh,  Pa. 
Rochester,  Rochester,  N.  Y. 
South  Dakota,  Vermilion,  S.  Dak. 
Tennessee,  Knoxville,  Tenn. 
Texas,  Austin,  Tex. 
Utah,  Salt  Lake  City,  Utah. 
Vermont,  Burlington,  Vt. 
Virginia,  Charlottesville,  Va. 
Washington,  Seattle,  Wash. 
Wisconsin,  Madison,  Wis. 
Wyoming,  Laramie,  Wyo. 


Vanderbilt  University,  Nashville,  Tenn. 


6 

Virginia  Military  Institute,  Lexington,  Va. 
Virginia  Polytechnic  Institute,  Blacksburg,  Va. 
Washington  University,  St.  Louis,  Mo. 
West  Virginia  University,  Morgantown,  W.  Va. 
Worcester  Polytechnic  Institute,  Worcester,  Mass. 
Yale  University,  New  Haven,  Conn. 

APPLICATION. 
Applications  for  appointment  should  be  made  to  the  Chief  of  Bureau  of  Navigation, 
Navy  Department,  Washington,  D.  C,  and  one  requirement  is  that  the  application 
be  in  the  handivriting  of  the  candidate,  and  in  the  following  form: 


191. 


Sir: 

I  request  permission  to  be  examined  at for  appointment  as  acting 

ensign  for  engineering  duty.     I  was  bom  at on day  of ; 

and  am  a  citizen  of  the  United  States,  residing  in ,  County  of , 

in  the  State  of 

My  occupation  is  that  of ;  am  a  graduate  of ;  character  of 

degree  received 

The  following  is  a  description  of  my  scientific  work  performed  before  or  after 
graduation:  

I  am  inclosing  certificates  as  to  moral  character,  habits,  and  citizenship;  also  a 
certificate  from  the  faculty  of  the  above-mentioned  school  (or  college)  which  shows 
the  full  course  pursued,  my  relative  standing,  the  degree  conferred  on  me,  and  my 
deportment  as  a  student. 
Very  respectfully, 


The  Chief  op  Bureau  op  Navigation, 

Navy  Department,  Washington,  D.  C. 

Applications  must  be  accompanied  by  testimonials  as  to  citizenship,  good  moral 
character,  and  correct  habits  from  at  least  two  persons  of  prominence  who  have 
personally  known  the  applicant  long  enough  to  form  a  correct  opinion  of  him. 

Upon  the  receipt  of  an  application  for  appointment  as  acting  ensign  same  will  be 
promptly  acknowledged,  and  if  the  candidate  is  considered  eligible  a  permit  will  be 
issued  in  time  to  enable  him  to  appear  for  the  professional  examination. 

PROFESSIONAL  EXAMINATION. 

The  professional  examination  of  candidates  will  be  held  simultaneously  throughout 
the  United  States,  after  which  all  papers  will  be  forwarded  to  the  local  board  at  Wash- 
ington, D.  C,  for  marking.  When  this  has  been  done  permits  \vill  be  issued  to  the 
successful  candidates  authorizing  them  to  appear  for  the  physical  examination. 

Candidates  should  promptly  advise  the  Bureau  of  Navigation  of  any  change  of 
address  in  order  that  permits,  if  issued,  may  roach  them  promptly. 

The  following  sample  schedule  of  subjects  and  sample  set  of  questions  are  given  in 
order  that  candidates  may  have  an  idea  of  the  scope  of  the  professional  examination: 


Day.       Time. 


First. 


Third 

Fourth... 


Hours. 


Subjects. 


Engines  (sheet  A) , 

Boilers  (sheet  B^ 

Auxiliary  machinery  (sheet  C) , 

Internal  combustion  and  explosive  engines  (sheet  D), 

Electricity  (sheet  E) 

Applied  mechanics  (sheet  F) , 

Heat  and  thermodynamics  (sheet  G) 

Hydraulics  (sheet  H ) 

Shop  practice  (sheet  I) 


From- 


9  a.  m.  to  12  m, 
2  to  5  p.  m. 
9  a.  m.  to  12  m. 
2  to  5  p.  ra. 
8.30  to  11.30  a.  m. 
12.30  to  3  p.  m. 
3.15  to  5.45  p.  m. 
9  to  11.30  a.  m. 
2  to  5  p.  m. 


ENGINES. 
(Sheet  A.)  Time,  3  hours. 

En.  1.  Describe  a  tandem  compound  high-speed  engine  and  explain  the  action  of 

its  shaft  governor. 
En.  2.  Describe  a  Stephenson  link  valve  gear. 

Explain  the  meaning  of  the  terms:  Steam  lap,  Steam  lead,  Valve  travel,  Cut- 
off, and  Angle  of  advance. 
En.  3.  (a)  What  is  the  use  of  a  cylinder  liner? 

(6)  Sketch  a  method  of  securing  a  large  piston  to  a  piston  rod. 

(c)  Explain  the  difference  between  a  piston  valve  and  a  D-slide  valve. 

(d)  Explain  the  Corliss  valve  gear. 

En.  4.  Discuss  in  detail  the  fundamental  principles  of  the  Curtiss  and  the  Parsons 
turbines.    Sketch  the  type  of  blading  used  in  each  turbine. 

En.  5.  Explain  the  principles  of  the  steam  engine  indicator.  Applied  to  the  cylinder 
of  a  marine  engine,  what  points  are  revealed  directly  by  the  diagram? 
What  particulars  may  be  calculated  or  inferred? 

feoiLERS. 

(Sheet  B.)  Time,  3  h<mn. 

B  1.  Name  and  describe  a  large  water-tube  boiler  of  well-known  type.  Sketch  two 
views  of  the  boiler,  showing  clearly  its  main  features,  and  by  arrows  the  cir- 
culation of  the  water  and  the  gases  of  combustion. 

B.  2.  Explain  the  theory  of  chimney  draft. 

Describe  the  forced  and  induced  draft  systems  as  used  in  large  power  plants. 

B.  3.  Describe  a  gas  analysis  apparatus  and  its  use  as  applied  to  smokestacks.  Discuss 
the  results  obtained  from  its  operation. 

B.  4.  Name  the  advantages  and  disadvantages  of  oil  fuel.  Discuss  boiler  incrusta- 
tion— causes,  removal,  and  prevention. 

B.  5.  Name  the  fittings  for  a  high-pressure  boiler. 
What  is  the  object  of — 
(a)  Dry-pipe. 
(6)  Dead  plate, 
(c)  Bridge  wall. 
{d)  Corrugated  furnace  flue. 
Discuss  the  relative  merits  of  firing  by  hand  and  by  mechanical  stokers. 

AUXILIARY  MACHINERY. 

(Sheet  C. )  Time,  3  hours. 

Aux.  1.  Describe  a  two-stage  centrifugal  pump.    What  advantage  has  a  centrifugal 

pimip  for  boiler  feed  purposes? 
Aux.  2.  What  is  the  office  of  a  feed-water  heater?    Name  two  fundamental  types  of 

heater,  and  state  advantages  of  each.    What  is  the  difference  between  an 

economizer  and  a  feed  heater?    Make  a  diagram  showing  locations  on  a 

steam  line  of  a  separator  and  of  a  trap.     Describe  the  action  of  the  bucket 

trap. 
Aux.  3.  Describe  in  detail  with  sketches  a  surface  condenser. 
Aux.  4.  What  is  the  office  of  the  circulating  pump?    What  is  meant  by  wet  air  pump? 

By  dry  air  pump?    State  where  these  pumps  are  used. 
Describe  a  sight  feed  automatic  lubricator  and  its  action. 
Aux.  5.  Describe,  with  sketch,  a  refrigerating  plant  suitable  for  ice  making  and  cold 

storage. 
Explain  clearly  how  to  set  the  slide  valve  of  a  small  engine  by  observation 

of  the  valve  itself. 


8 

INTERNAL  COMBUSTION  AND   EXPLOSIVE   ENGINES. 

(Sheet  D. )  Time,  3  hours. 

I.  C.  E.  1.  Describe  in  detail  the  terms  2-cycle  and  4-cycle  as  applied  to  gasoline 

engiaes. 
I.  0.  E.  2.  Sketch  the  cross  section  of  a  carbureter  fcr  a  gasoline  engine.     Describe 

its  operation. 
I.  0.  E.  3.  Describe,  with  diagrams,  two  systems  of  electric  ignition  for  a  gasoline 

engine. 
I.  C.  E.  4.  Describe  in  detail  how  to  start  and  stop  a  small  gasoline  engine.     What 

are  the  usual  causes  of — 
(a)  Failure  to  start. 
(6)  Overheating. 

(c)  Knocking. 

(d)  Crank-case  explosion. 

I.  C.  E.  6.  Discuss  a  4-cycle  Diesel  engine,  explaining  the  cycle,  method  of  ignition, 
pressures  and  temperatures  employed,  cooling  system,  kind  of  fuel. 

ELECTRICITY. 

(Sheet  E.)  Time,  3  hours. 

E.  1.  Describe  briefly,  and  indicate  when  used — 

(a)  Booster. 

(b)  Dynamotor. 

(c)  Transformer. 

(d)  Rotary  converter. 

E.  2.  Describe  a  shunt  motor,  and  a  series  motor.    Name  the  conditions  under  which 

each  operates  to  its  best  advantage. 
E.  3.  Describe  the  Ward  Leonard  method  of  speed  control  of  motors.    Name  two  other 

systems  of  speed  control. 
E.  4.  What  points  are  of  chief  importance  in  the  operation  and  care  of  electrical 

generating  machinery? 
E.  5.  Make  a  wiring  diagram  for  one  panel  of  a  lighting  and  power  switchboard,  to  be 

used  in  connection  with  two  direct-current  shunt  generators.    Show  necessary 

switches,  fuses,  voltmeter,  ammeters,  circuit  breakers,  etc. 

APPLIED  MECHANICS. 

(Sheet  F.)  Time,  2|  hours. 

A.  M.  1.  What  work  is  done  on  a  level  track,  in  brigning  up  the  velocity  of  a  train 
weighing  jTtons,  from  zero  to  F  miles  per  hour,  if  the  change  of  speed  is 
accomplished  in  a  length  of  S  feet?    The  total  frictional  resistance  at  any 
speed  is/ pounds  per  ton.    Assume  the  motion  to  be  uniformly  accelerated, 
find  the  power  to  drive  this  train  at  a  speed  of  F  miles  per  hour. 
A.  M.  2.  Deduce  a  formula  for  the  horsepower  absorbed  in  friction  in  a  shaft  bearing 
X  inches  in  diameter  carrying  a  pressure  of  T  tons,  and  making  N  revo- 
lutions per  minute.    Coefficient  of  friction  is/. 
A.  M.  3.  A  12-inch  I-'  eam  has  two  flanges  each  6  inches  wide  and  1  inch  thick;  the 
thickness  of  the  we  j  is  1  inch.    This  beam  is  centrally  loaded  with  20,000 
pounds,  and  the  span  is  10  feet.    Find  the  maximum  fi jer  stress. 
A.  M.  4.  (a)  Define  coefficient  of  elasticity  and  coefficient  of  rigidity,  giving  a  formula 
for,  and  explaining  the  symbols  in  each. 
'6)  A  force  P  acts  along  the  piston  rod  due  to  steam  pressure.    The  angle 
of  connecting  rod  to  piston  rod  is  30°.    Show  graphically  the  forces 
acting  along  the  connecting  rod  and  against  the  crosshead  guides. 


A.  M.  5.  Find  the  thickness  of  the  shell  plate  of  a  cylindrical  boiler  9  feet  in  diameter. 
The  pressure  in  the  shell  is  160  pounds  per  square  inch,  the  factor  of  safety 
is  6,  and  the  tensile  strength  of  the  material  is  54,000  pounds  per  square 
inch. 
Find  the  diameter  of  a  stay  bolt  for  this  boiler  if  each  end  supports  150 
square  inches;  material  of  bolt  same  as  for  shell. 

HEAT   AND   THERMODYNAMICS. 

(Sheet  G.)  Time,  2^  hours. 

H.  and  T.  1.  What  do  you  understand  by  the  thermal  efficiency  of  a  heat  engine? 

A  test  of  an  engine  and  boiler  shows  1.05  pounds  coal  consumed  per 
brake  horsepower  hour.    The  heat  of  combustion  of  the  coal  is  14,000 
B.  t.  u.  per  pound.    What  is  the  thermal  efficiency  of  the  plant? 
Define:  (a)  Total  heat  of  superheated  steam. 
(6)  Quality  of  steam. 
H.  and  T.  2.  What  weight  of  air  at  200.3  pounds  gauge  and  140.5°  F.  is  contained  in 
a  cylinder  6  feet  in  diameter  and  20  feet  long?    A  pound  of  air  under 
atmospheric  conditions  occupies  12.4  cubic  feet. 
H.  and  T.  3.  Enumerate  and  explain  the  principal  heat  losses  in  a  steam  plant. 

Explain,  with  diagrams  on  the  pressure- volume  and  temperature-entropy 
planes,  the  Carnot  cycle. 
H.  and  T.  4.  A  4-cycle  Diesel  engine  with  6  single-acting  cylinders  of  16-inch  bore 
and  24-inch  stroke  develops  500  b.  h.  p.  at  180  revolutions  per  minute. 
What  is  the  mean  effective  pressure  based  on  the  brake  output? 
H.  and  T.  5.  Ten  pounds  of  water  at  100°  F.,  5  pounds  of  ice  at  32°  F.,  and  1  pound  of 
wet  steam  at  212°  F.,  quality  is  0.90,  are  mixed.  What  is  the  re- 
sultant temperature?  (Latent  heat  of  fusion  of  ice  is  144  B.  t.  u.  per 
pound  and  latent  heat  of  steam  is  970  B.  t.  u.  per  pound.) 

HYDRAULICS. 

(Sheet  H.)  Time,  2i  hours. 

H.  1.  (a)  Explain  what  is  meant  by  a  contracted  weir,  a  suppressed  weir,  and  tri- 
angular weir.    Which  is  tiie  more  accurate  for  measuring,  a  triangular  or 
a  rectangular  weir? 
(6)  In  the  flow  of  water  from  a  tank  through  a  sharp-edged  orifice  what  coeffi- 
cients have  to  be  considered  in  finding  the  quantity  of  water  flowing 
through  this  orifice? 
H.  2.  (a)  A  pump  is  used  to  force  feed  water  into  a  boiler.    Explain  the  different 
heads  that  have  to  be  taken  into  account  in  pumping  the  water. 
(6)  How  would  you  find  the  horsepower  necessary  to  pump  water  to  a  certain 
height? 
H.  3.  (a)  Explain  and  describe  a  Piezometer  tube,  a  pitot  tube,  and  a  Venturi  meter. 
(6)  A  gate  A  feet  wide  and  B  feet  high,  hinged  at  the  upper  edge,  is  kept  closed 
by  the  pressure  of  water  standing  C  feet  above  the  top.    What  force, 
applied  normally  at  the  bottom  of  the  gate,  would  be  required  to  open  it? 
H.  4.  A  steel  box,  rectangular  in  plan,  floats  with  a  draft  of  2  feet.     If  the  box  be  20 
feet  long,  10  feet  wide,  and  6  feet  deep,  find  the  time  necessary  to  sink  it  by 
opening  a  standard  orifice  6  inches  square  in  its  bottom.    (Neglect  thickness 
of  sides.) 
H.  5.  A  pump  supplies  water  to  a  nozzle.    What  horsepower  at  the  pump  will  be 
necessary  to  maintain  a  stream  of  water  having  a  velocity  of  75  feet  per  second 
with  the  nozzle  held  30  feet  above  the  pump  cylinder?    The  nozzle  has  a 
diameter  of  1^  inches  at  the  tip  and  a  coefficient  of  0.90.    Neglect  the  friction 
due  to  the  hose. 


10 


SHOP  PRACTICE. 
(Sheet  I.) 


Time,  3  hours. 


S.  P.  1.  Describe  the  operation  of  preparing  a  test  specimen  of  boiler  plate  and 
method  of  obtaining  its  tensile  strength. 

S.  P.  2.  Are  rivet  holes  in  boiler  plate  usually  punched  or  drilled?  What  is  meant 
by  calking  a  joint,  and  how  is  it  done?  In  what  way  may  a  riveted  joint 
fail? 

S.  P.  3.  Describe  briefly  the  Bessemer  process  of  making  steel.  Describe  briefly 
the  rolling  of  an  I  beam. 

S.  P.  4.  What  is  meant  by  shrinkage  allowance  in  pattern  making?  Explain  briefly 
with  sketch  the  making  of  a  green  sand  mold.  Explain  briefly  the  differ- 
ence between  brazing  and  soldering. 

S.  P.  5.  Describe  completely  the  forging  and  machining  of  a  small  bolt. 

List  of  points  authorized  for  professional  examinations. 


Birmingham. 

District  of  Co- 

Ames. 

Demopoiis. 

lumbia Washington. 

Burlington. 

Dothan. 

Cedar  Rapids. 

Florence. 

Gainesville. 

Council  Bluffs. 

Huntsville. 

Jacksonville. 

Creston. 

Mobile.         c.  H. 

Key  West. 

Davenport. 

Montgomery. 

Florida 

Miami. 

Denison. 

Opelika. 

Pensacola. 

Iowa 

Des  Moines. 

Sanford. 

Dubuque. 

Clifton. 

Tallahassee. 

Fort  Dodge. 

Douglas. 

Tampa. 

Iowa  City. 

Flagstaff. 

Mason  City 

Arizona. 

Globe. 

Albany. 

Ottumwa. 

Phoenix. 

Athens. 

Sioux  aty. 

Prescott. 

Atlanta. 

Spencer. 
Waterloo. 

Tucson. 

Augusta. 

Yuma. 

Georgia 

Columbus. 

Macon. 

Concordia. 

Camden. 

Rome. 

Dodge  City. 
Emporia. 
Fort  Scott. 

Fayetteville. 

Savannah. 

Fort  Smith. 

Thomasville. 

Arkansas 

Helena. 

Waycross. 

Kansas  City. 

Jonesboro. 

Lawrence. 

Little  Rock. 

Hawaii Honolulu,    c.  h. 

Kansas 

Leavenworth. 

Texarkana. 

Manhattan. 

Boise. 

Norton. 

Chico. 

Coeur  d'Alene. 

Pittsburg. 
SaUna. 

Eureka. 

Grangeviile. 

Fresno. 
Los  Angeles. 

Idaho 

Moscow. 
Pocatallo. 

Topeka. 

Wichita. 

Red  Bluff. 

Sandpoint. 

Califoraia 

Riverside. 

St.  Anthony. 

rAcTilon/l 

Sacramento. 
San  Diego. 
San  Francisco. 
San  Jose. 

Twin  Falls. 
.Weiser. 

fCairo. 

Bowling  Green. 

Covington. 

Hopkinsville. 

Lexington. 

Trf>nisville. 

San  Luis  Obispo. 

Urbanft. 

Kentucky.   ... 

Colorado  Springs. 
Denver. 
Durango. 
Fort  Collins. 

Illinois 

Chicago. 

East  St.  Louis. 

EfBngham. 

Freeport. 

Galesburg. 

Peoria. 

Middlesboro. 
Owensboro. 
Paducah. 
Somerset. 

Fort  Morgan. 

Colorado 

Grand  Junction. 
La  Junta. 

Quincy. 
Rock  Island. 

Alexandria. 
Baton  Rouge. 

Leadville. 

L~^»— o—~-^ — 

Srtrinorflolrl 

Lake  Charles. 

Monte  Vista. 

Louisiana 

Monroe. 

Montrose. 

l#A-nerr»lft. 

New  Iberia. 

Pueblo. 

Bloomington. 
EvansviUe. 

New  Orleans,C.H. 

Trinidad. 

Shreveport. 

Connecticut.... 

fHartford. 
Middletown. 
New  Haven. 
New  London. 
Waterbxiry. 
Willimantic. 

Indiana 

Fort  Wayne. 

Indianapolis. 

Jeffersonville. 

La  Fayette. 

Marion. 

Richmond. 

South  Bend. 

Mfllne 

Bangor. 
Bath. 
Calais. 
Caribou. 

Houlton. 
Lewiston. 

/Dover. 
\Wilmington. 

Terre  Haute. 

Portland. 

Delaware 

Valparaiso. 

Rockland. 

11 


Maryland. 


liassachusetts . 


Michigan. 


Mississippi. 


Missouri. 


Montana. 


Baltimore. 
Cumberland. 
Easton. 
Salisbury. 

Boston. 

Brockton. 

Fall  River. 

Fitcbburg. 

Hyannis. 

Lawrence. 

Lowell. 

Pittsfield. 

Salem. 

Springfield. 

Worcester. 

Ann  Arbor. 

Cheboygan. 

Detroit. 

Escanaba. 

Grand  Rapids. 

Ironwood. 

Kalamazoo. 

Lansing. 

Manistee. 

Marquette. 

Saginaw. 

Sault  Ste.  Marie. 

Traverse  City. 

Austin. 

Bemidji. 

Brainerd. 

Crookston. 

Duluth. 

Fergus  Falls. 

International 

Falls. 
Mankato. 
Minneapolis. 
Pipestone. 
St.  Cloud. 
St.  Paul. 
Virginia. 
Willmar. 
Winona. 

Corinth. 

Greenville. 

Grenada. 

Hattiesburg. 

Holly  Springs. 

Jackson. 

Meridian. 

Natchez. 

Vicksburg. 

West  Point. 

Cape  Girardeau. 

Columbia. 

Jefferson  City. 

Kansas  City. 

Kirksville. 

Moberly. 

Poplar  Bluff. 

St.  Joseph. 

St.Louis,OLDC.H. 

Springfield. 

Warrensburg. 

Billings. 

Bozeman. 

Butte. 

Glasgow. 

Great  Falls. 

Havre. 

Helena. 

KaUspell. 

Miles  aty. 

Missoula. 


Nebraska. 


Nevada. 


Allianco. 

Beatrice. 

Broken  Bow. 

Chadron. 

Columbus. 

Grand  Island. 

Holdredge. 

Lincoln. 

McCook. 

Nebraska  City. 

Norfolk. 

North  Platte. 

Omaha. 

O'Neill. 


Carson  City. 
Elko. 


New  Hamp 
shire. 


Ely. 
Goldfleld. 
Reno. 
Fallon. 


Berlin. 

Concord. 

Hanover. 

Keene. 

Manchester. 

Plymouth. 

Portsmouth. 


(Atlantic  City. 
Trenton. 


New  Mexico... 


New  York. 


North  Carolina. 


North  Dakota.. 


Albuquerque. 
East  Las  Vegas. 
Las  Cruces. 
Raton. 
Roswell. 
Santa  Fe. 
Tucumcari. 

Binghamton. 

Buffalo. 

Elmira. 

Ithaca. 

Jamestown. 

New  York,  C.H. 

Ogdensburg,c.H 

Plattsburg. 

Poughkeepsie. 

Rochester. 

Syracuse. 

Troy. 

lUtica. 

Asheville. 

Charlotte. 

Durham. 

Goldsboro. 

Greensboro. 

Hickory. 

Raleigh. 

Salisbury. 

Washington. 

Wilmington. 

Bismarck. 
Devils  L/ake. 
Dickinson. 
Fargo. 

Grand  Forks. 
Minot. 
Valley  Qty. 
iWilliston. 


Ohio. 


Oklahoma. 


Oregon. 


Pennsylvania. 


Porto  Rico 

Rhode  Island.. 


South  Carolina. 


South  Dakota.. 


Akron. 

Athens. 

Chillicothe. 

Cincinnati. 

Cleveland. 

Columbus. 

Dayton. 

Irohton. 

Lima. 

Mansfield. 

Marietta. 

Portsmouth. 

Sandusky. 

Steubenvillo. 

Toledo. 

Youngstown. 

Zanesville. 

Altus. 

Ardmore. 

Enid. 

Guthrie. 

Lawton. 

McAlester. 

Muskogee. 

OVlahoma. 

Vinita. 

.Woodward. 

Astoria. 

Baker. 

Bend. 

Corvallis. 

Eugene. 

Grants  Pass. 

Klamath  Falls. 

Marslifield. 

Pendleton. 

Portland. 

.The  Dallee. 

Altoona. 

Dubois. 

Erie. 

Galeton. 

Harrisburg. 

Philadelphia. 

Pittsburgh. 

SotithBethlehem 

State  College. 

Uniontown. 

Warren. 

Wilkes-Barre. 

•WiUiamsport. 

San  Jnan. 

Providence. 

Charleston. 

Che-^iter. 

Columbia. 

Florence. 

Greenville. 

Greenwood. 

Orangeburg. 

Sumter. 

f  Aberdeen. 
Brookings. 
Deadwood. 
Huron. 
Lemmon. 
MitcheU. 
Pierre 
Raoid  Citv. 
Sioux  Falls. 
Watertown. 

fBristoL 

Chattanooga. 

Jackson. 

KnoxviQe. 

Memphis. 

.Nashville. 


12 


Abilene. 

Amarillo. 

Austin. 

Brownsville,  c.h. 

Bryan. 

Pallas. 

El  Paso.        c.  H. 

Houston. 

Lubbock. 

Nacogdoches. 

San  Angelo. 

San  Antonio. 

Texarkana. 

Waco. 

Wichita  Falls. 


Utah. 


Vermont. 


fLogan. 
jOgden. 
■|P*rovo. 
[Salt  Lake  City 

Brattleboro. 

Burlington. 

Montpelier. 

Newport,      c. : 

Rutland. 

St.  Albans,    c: 

St.  Johnsbury. 


Virginia. 


Washington. 


Abingdon. 

fBluefleld. 

Alexandria. 

Charleston, 

Charlottesville. 

Elkins. 

Clifton  Forge. 

Grafton. 

Lynchburg. 
Norfolk. 

W'-stViri^'inla.. 

Hinton. 
Huntington. 

Richmond. 

Martinsburg. 

Roanoke. 

Morgantown. 

Staunton. 

Parkersburg. 

Winchester. 

Wheeling. 

Apoleton. 
\shland. 

Aberdeen. 

CbipnewaFaDs. 
La  Crosse. 

BeUingham. 
CentraUa. 

Wisconsin 

Madison. 

North  Yakima. 

Marinette. 

Pasco. 

Milwankee. 

Port  Townsend. 

Superior. 

Pullman. 

Wausau. 

Raymond. 

Casner. 

Seattle. 

Chcvonne. 

Spokane. 
Tacoma. 

Cody. 
Evanston. 

Vancouver. 
Walla  Walla. 

Wyomhig 

Lander. 
Laramie, 

Wenatchee. 

Rawlins. 
Rock  Springs. 
Sheridan. 

PHYSICAL  EXAMINATION. 


The  physical  examination  will  be  held  after  the  professional,  and  the  candidate, 
provided  he  sucessfully  passes  the  professional  examination,  will  be  authorized 
to  appear  for  physical  examination  by  a  board  of  naval  medical  officers  at  one  of  the 
following  naval  stations:  Portsmouth,  N.  H,;  Boston,  Mass.;  Newport,  R.  I.;  New 
York,  N.  Y.;  Philadelphia,  Pa,;  Washington,  D.  C;  Annapolis,  Md.;  Norfolk,  Va.; 
Charleston,  S.  C;  Pensacola,  Fla.;  New  Orleans,  La.;  Great  Lakes,  111.;  Las  Animas, 
Colo.;  Mare  Island,  Cal.;  San  Francisco,  Cal.;  and  Puget  Sound  (Bremerton),  Wash. 
As  the  necessary  naval  medical  officers  are  available  olily  at  the  above-mentioned 
places,  physical  examinations  will  not  be  conducted  elsewhere. " 

Candidates  must  be  physically  sound  in  every  respect,  and  those  who  have  been 
selected  for  appointment  will  be  authorized  to  report  for  physical  examination  before 
a  board  of  medical  examiners  composed  of  medical  officers  of  the  Navy. 

The  physical  qualifications  of  the  applicants  for  appointment  as  oncers  in  the  Navy 
are  decided  upon  by  an  examining  board  consisting  of  medical  officers  of  the  Navy. 
No  material  physical  defect  will  be  waived  in  any  case  for  any  reason. 

A  candidate  must  declare  under  oath  that  he  labors  under  no  mental  or  constitu- 
tional disease  or  weakness,  nor  any  other  imperfection  or  disability  which  may  inter- 
fere with  the  most  efficient  discharge  of  the  duties  of  an  officer  in  any  climate. 

It  is  suggested  that  all  candidates  should  first  cause  themselves  to  be  thoroughly 
examined  by  a  competent  physician,  particularly  regarding  eyesight,  hearing,  and 
heart  trouble,  thus  avoiding  the  trouble  and  expense  of  appearing  for  examination 
when  not  physically  qualified. 

No  allowances  will  be  made  for  the  expenses  of  persons  appearing  for  either  of  the  above 
examinations. 

Table  of  physical  proportions  for  height,  weight,  and  chest  measurement. 


Height. 

Weight. 

Chest.i 

Height. 

Weight. 

Chest.i 

Inches. 
66 
67 
68 
69 

Pounds. 
132 
134 
141 
148 

Inches. 
33J 
34 
34i 
34f 

Inches. 
70 
71 
72 
73 

Pounds. 
155 
162 
169 
176 

Inches. 
36 

» Mean  circumference. 


13;  •■     „     ;       ■■■;.■..., 

It  is  not  necessary  that  the  applicant  should  conform  exactly  to  the  figures  in  the 
foregoing  table,  which  is  given  to  show  what  is  regarded  as  a  fair  standard  of  physical 
proportions.  A  variation  not  exceeding  15  pounds,  not  to  fall  below  132  pounds  in 
weight  or  1  inch  in  the  mean  chest  measurement,  below  the  standard  given  in  the 
table,  is  admissible  when  the  candidate  for  appointment  is  active,  has  firm  muscles, 
and  is  evidently  vigorous  and  healthy.  A  chest  expansion  of  less  than  2^  inches  is 
a  sufficient  cause  for  the  rejection  of  the  applicant. 

Any  one  of  the  following  conditions  will  be  sufficient  to  cause  rejection: 

(a)  Feeble  constitution,  poor  physique,  impaired  general  health. 

(6)  Any  disease  or  deformity,  either  congenital  or  acquired,  which  would  impair 
efficiency,  such  as  weak  or  deranged  intellect,  cutaneous  diseases,  parasites  of  the 
skin  or  its  appendages,  deformity  of  the  skull,  abnormal  curvature  of  the  spine,  torti- 
collis, inefficiency  of  joints  or  limbs,  deformity  of  joints  or  bones,  either  congenital 
or  the  result  of  disease  or  injury,  epilepsy  or  other  convulsions,  diseases  of  the  eye, 
defective  vision,  color  blindness,  impaired  hearing  or  disease  of  the  ear,  chronic  nasal 
catarrh,  ozena,  polypi,  great  enlargement  of  the  tonsils,  impediment  of  speech,  dis- 
ease of  heart  or  lungs,  enlarged  abdominal  organs,  evidence  of  sclerosis,  tumors,  hernia, 
undescended  testicle,  large  varicocele,  sarcocele,  hydrocele,  stricture,  fistula,  hemor- 
rhoids, varicose  veins,  disease  of  the  geni to-urinary  organs,  deformed  or  diseased 
feet,  evidences  of  intemperance  or  of  the  morbid  use  of  drugs,  loss  of  many  teeth  or 
teeth  generally  unsound  (teeth  properly  filled  not  to  be  considered  unsound).  Every 
applicant  must  have  at  least  20  soimd  teeth  and  of  these  not  less  than  4  apposed 
incisors  and  4  opposed  molars. 

(c)  Any  acute  disease. 

Acuteness  of  vision  must  be  not  less  than  12/20  for  each  eye  unaided  by  glassy, 
and  capable  of  correction  by  glasses  to  20/20. 

No  very  close  estimate  can  be  made  regarding  time  elapsing  from  passing  of  physical 
examination  to  issuing  of  appointment,  probably  a  few  weeks. 

When  an  appointment  is  issued  it  is  accompanied  by  a  blank  form  of  "Acceptance 
and  oath  of  office,"  which  the  candidate  is  expected  to  fill  out  immediately  and 
return  to  the  department.     Orders  are  then  issued  to  report  for  duty. 

PAY. 

The  pay  of  an  ensign  at  sea  is  $1,870  a  year;  on  shore  it  is  $1,700  plus  allowances 
for  quarters,  heat,  and  light. 

Upon  the  completion  of  travel  performed  under  orders,  officers  of  the  Navy  are 
reimbursed  at  the  rate  of  8  cents  per  mile  in  lieu  of  traveling  expenses. 


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U.G.BERKELEY  LIBRARIES 


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UNIVERSITV  of  CALIFORNIA  LIBRARY 


